<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download"/>
          <a :href="'/static/1.xlsx'">点击下载模版</a>
        </el-tag>
      </el-form-item>
      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="'http://localhost:9001/eduservice/edu-subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel">
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload">{{ upload_message }}</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
export default{
    data(){
        return{
            BASE_API:process.env.BASE_API,
            importBtnDisabled:false,
            loading:false,
            upload_message:"确定上传文件"
        }
    },
    
    created(){
    },
    methods:{
      // 上传按钮
      submitUpload(){
        this.importBtnDisabled = true
        this.loading = true
        // js  document.getElementById("upload").submit
        this.$refs.upload.submit()
      },
      // 上传成功
      fileUploadSuccess(){
        this.loading = false
        // 提示信息
        this.$message({
          type:'success',
          message:'添加课程成功'
        })
        this.$router.push({path:'subject/list'})
      },
      // 上传失败
      fileUploadError(){
        this.loading = false
        this.$message({
          type:'error',
          message:'添加课程失败'
        })
      },
    }
}
</script>